objective-c - 单击按钮后 10 秒运行 IBAction

Question

我有一个IBAction链接到一个按钮。单击该按钮时，将播放一个 .wav 文件。IBAction单击按钮后如何运行 10 秒？

Answer 1

您可以使用performSelector: withObject: afterDelay

[self performSelector:@selector(myFunc) withObject:nil afterDelay:10.0];

将它放在按下按钮时调用的 IBAction 调用中，myFunc将在 10 秒后调用。

Answer 2

您可以使用dispatch_after延迟代码执行：

- (IBAction) onAction: (id)sender
{
    double delayInSeconds = 10.0;
    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
    dispatch_after(popTime, dispatch_get_main_queue(), ^(void){

        // do delayed work here
    });
}